move and rename private/textures.h to textures/internal_api.h

src/textures/internal_api.h

@@ -0,0 +1,42 @@
+#ifndef TEXTURES_INTERNAL_API_H
+#define TEXTURES_INTERNAL_API_H
+
+#include "../util.h"
+#include "../textures/modes.h"
+
+#include <SDL2/SDL.h>
+#include <stb_rect_pack.h>
+#include <glad/glad.h>
+
+#include <stdbool.h>
+
+struct texture {
+    t_rect srcrect;             /* position in atlas */
+    SDL_Surface *data;          /* original image data */
+    int atlas_index;
+    GLuint loner_texture;       /* stored directly for loners, == 0 means atlas_index should be used */
+    enum texture_mode mode;
+};
+
+
+struct texture_cache_item {
+    char *key;
+    struct texture value;
+};
+
+
+struct texture_cache {
+    SDL_Window *window;          /* from context */
+
+    struct texture_cache_item *hash;
+
+    stbrp_node *node_buffer;     /* used internally by stb_rect_pack */
+
+    SDL_Surface **atlas_surfaces;
+    GLuint *atlas_textures;      /* shared by atlas textures */
+    int atlas_index;             /* atlas that is currently being built */
+
+    bool is_dirty;               /* current atlas needs to be recreated */
+};
+
+#endif